Where can I find free epub books on software development?

Question

Programming

I know there are collections of links to various e-books, but there are important nuances:

• epub format or another that is understood by standard iOS/Android readers
  
• any pdf is not suitable, because. need reformatting for a small screen (say 5 inches)
  
• automatic reformatting is also not suitable, because. breaks source code formatting
  
• all sorts of github books are also good, but there is no reader interface (good idea for a startup, right?)
  

All this in order to comfortably read the book from the screen of the phablet.
The question is where to look for these?
Of course, you can just go to orelly or amazon and get $$$ off, but we're not looking for easy ways, are we? :)

Answer 1

Tor browser. Flibust library.
Almost every book is there.

Answer 2

On Github

Answer 3

Here is one book published every day in English, free and legal:
https://www.packtpub.com/packt/offers/free-learnin...

Answer 4

A selection of free books from O'Reilly

Answer 5

There is a Flibusta bot in the cart: `flibusta free book bot` (no spaces). The bot is convenient because:
1) there is a description for each book;
2) offers books in various formats (including epub or fb2).
In short, a great option to familiarize yourself with the book before a potential purchase.

Answer 6

LIBGEN
But PDF\CHM prevail there.
IRC #bookz
- but this produces a lot of PDF
- therefore it makes sense to first refine the query, for example, by adding "epub", but this will significantly reduce the volume of output, down to zero
A little here O'Reilly
This is a feature of the industry. I recommend to accept and read from a larger device.

Answer 7

Converter of books from the free software Caliber eBook Library, launched from the command line.

AZW4 Input Options
CHM Input Options
Comic Input Options
DJVU Input Options
DOCX Input Options
EPUB Input Options
FB2 Input Options
HTLZ Input Options
HTML Input Options
LIT Input Options
LRF Input Options
MOBI Input Options
ODT Input Options
PDB Input Options
PDF Input Options
PML Input Options
RB Input Options
RTF Input Options
Recipe Input Options
SNB Input Options
TCR Input Options
TXT Input Options
AZW3 Output Options
DOCX Output Options
EPUB Output Options
FB2 Output Options
HTML Output Options
HTMLZ Output Options
LIT Output Options
LRF Output Options
MOBI Output Options
OEB Output Options
PDB Output Options
PDF Output Options
PML Output Options
RB Output Options
RTF Output Options
SNB Output Options
TCR Output Options
TXT Output Options
TXTZ Output Options